Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
74
Directory of Open Access Journals: DOAJ Articles
22
Unknown
15
Copernicus Publications: E-Journals
10
Niedersächsisches Online-Archiv NOA
8
Defense Technical Information Center: DTIC Technical Reports database
7
Frontiers: Figshare
7
Frontiers (Publisher)
6
Natural Environment Research Council: NERC Open Research Archive
6
PubMed Central (PMC)
5
University of São Paulo: Digital Library of Theses and Dissertations
4
Università degli Studi di Napoli "Parthenope": CINECA IRIS
4
W&M ScholarWorks
4
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
3
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
3
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3
MDPI Open Access Publishing
3
Old Dominion University: ODU Digital Commons
3
PANGAEA - Data Publisher for Earth & Environmental Science
3
University of California: eScholarship
3
University of Rhode Island: DigitalCommons@URI
3
University of Tasmania: UTas ePrints
3
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca)
3
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3
eCite UTAS (University of Tasmania)
3
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
IEDA: US Antarctic Program Data Center (via DataONE)
2
IOP Publishing
2
Padua Research Archive (IRIS - Università degli Studi di Padova)
2
University of Canterbury, Christchurch: UC Research Repository
2
Università Politecnica delle Marche: IRIS
2
Università degli Studi della Campania "Luigi Vanvitelli": CINECA IRIS V:
2
Università degli Studi di Genova: CINECA IRIS
2
Wiley Online Library (via Crossref)
2
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre)
1
Cambridge University Press
1
Cologne University: KUPS
1
Digital Commons @ Montana Tech
1
Digital Commons University of South Florida (USF)
1
ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile)
1
GEO-LEOe-docs (FID GEO)
1
Georg-August-Universität Göttingen: GOEDOC
1
Georgia Institute of Technology: SMARTech - Scholarly Materials and Research at Georgia Tech
1
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
IRIS Università degli Studi di Napoli Federico II
1
Institute for Marine Research: Brage IMR
1
KU Leuven: Lirias
1
NASA Technical Reports Server (NTRS)
1
National Institute of Polar Research Repository, Japan
1
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